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研究了组织和析出物对高效电机用无取向硅钢退火板磁性能的影响。结果表明:随着退火温度升高,退火板平均晶粒尺寸增加,P15/50明显降低,B50略有升高。退火温度在1 000℃时,退火板的综合性能较好。析出物主要是AlN、(MnS+AlN)和(MnS+Al2O3)复合析出物,尺寸较粗大,主要集中在1.0~2.5μm,还发现少量百纳米以下的细小AlN和TiN。实验室模拟TSCR流程试制的高效电机用无取向硅钢,铁损平均值小于4.00 W/kg,磁感应强度大于1.75 T,适合作中小型高效电机铁芯材料。 Effects of microstructure and precipitation on magnetic property of non-oriented silicon steel sheets after annealing for high-efficiency motor are studied in the paper by experiments.The annealed sheet exhibits a larger average grain size,obviously decreasing iron loss and slightly raising magnetic induction with increasing temperature.The annealed sheet has better comprehensive properties at a annealing temperature of 1 000 ℃.The main precipitates are compounds of AlN、(MnS+AlN)and(MnS+Al2O3) w... 
2011-04-28 148 5.8

本申请涉及激光焊接技术领域,特别涉及一种电机定子硅钢片自动焊接工装。该工装包括定位组件,压板组件和旋转组件。其中,定位组件用于承载定子硅钢片,所述定位组件具有用于在径向上对定子硅钢片进行限位的限位结构;所述压板组件位于定位组件的顶端,用于压住定子硅钢片;旋转组件承托于定位组件的底端,并带动定位组件转动。本申请实施例提供的一种电机定子硅钢片自动焊接工装,能够解决在旋转焊接时,无法保证定子硅钢片与工装夹具的同心度相同,致使焊缝质量不过关的问题,以及激光焊接中,硅钢片与工装夹具易粘连的问题。
2021-12-21 148 6.8

组织和织构是影响无取向硅钢性能的重要因素。为改善产品性能,研究了冷轧压下率(71.7%~87.0%)对高牌号无取向硅钢组织、织构、磁性能和力学性能的影响。结果表明,随冷轧压下率的增加,退火晶粒平均尺寸先减小后增大;高斯和立方织构强度减弱,γ纤维织构增强,α纤维织构转变为较强的α*({h, 1, 1}〈1/h, 1, 2〉)织构,并随冷轧压下率的增加而增强,同时其峰值逐渐向{111}面移动;工频铁损P1.5/50、高频铁损P1.0/400和磁极化强度J5000同时降低,屈服强度变化不大,表面硬度逐渐增加。当冷轧压下率由84.7%增至87.0%、厚度减至0.30 mm时,高频铁损降幅是工频铁损的11倍,表面硬度增幅变大。以上研究成果对硅钢减薄后织构及组织的优化提供了很好的指导。 Microstructure and texture are critical factors on non-oriented silicon steel properties. In order to improve product properties, this paper studied the effect of cold rolling reduction rate(71.7%-87.0%) on microstructure, texture, magnetic properties and mechanical properties of high-grade non-oriented silicon steel. The results show that with the increase of cold rolling reduction rate, the average size of annealing grain decreases first and then increases. The intensity of Goss and λ fiber te... 
2022-05-28 148 5.8

本发明公开了一种电工钢片磁致伸缩模型的建模方法,包括:测量不同旋转磁场下电工钢片磁致伸缩对称蝴蝶曲线εk;对所测量的对称蝴蝶曲线进行辨识,构建磁致伸缩蝴蝶曲线εk的Everett函数数据库;将输入的矢量磁场B波形用旋转磁场形状参数Bmax,最大值方向的方向角θ和椭圆长短轴的长度比λ拟合,得到拟合后结果;通过线性插值法在磁致伸缩Everett函数数据库中进行插值,获得拟合后结果所对应的磁致伸缩Everett函数值Ek;根据Everett函数值Ek计算得出对应的磁致伸缩蝴蝶曲线εk。应用本发明实施例,不仅可以描述矢量磁致伸缩特性,还可以通过计算估算出旋转磁场下的瞬态磁致伸缩。此外,还能够考虑磁致伸缩的各向异性特性。
2021-09-27 148 6.8

本发明公开了一种新能源汽车驱动电机用低铁损高强度无取向电工钢及其制造方法,所述无取向电工钢的化学成分及重量百分比包括C:0.001‑0.005%、Si:2.4‑3.0%、Mn:0.25‑0.5%、Al:0.70‑1.10%、P:≤0.02%、S:≤0.005%、0.015%≤Ce+Sn≤0.035%,余量为铁和不可避免的杂质,本发明通过加入Ce和Sn,净化钢质、微合金化提高无取向电工钢强度和磁性能,不需要添加固溶金属元素,且避免了高Si体系下的轧制困难问题,且不需要高温退火,解决了退火温度过高使晶粒异常长大,晶粒尺寸均匀性降低的问题,生产出的无取向电工钢具有较高强度的同时,还具有优良的磁性能。
2021-10-29 148 6.8

采用扫描电镜、场发射扫描电镜、能谱仪等对50SW1300冷轧无取向硅钢中的夹杂物分不同尺寸区间进行数量统计,利用主成分回归分析法,即数据的标准化处理—主成分分析—回归分析—标准化的变量还原成原始变量—确定显著影响因素,综合分析夹杂物总量及各尺寸区间的夹杂物数量对无取向硅钢磁性能的影响。结果表明:主成分回归分析能够从夹杂物尺寸区间及数量的多个影响因素中提取主要的因素,定量研究其对磁性能的影响。分析表明,显著影响无取向硅钢铁损的夹杂物为100~500nm的AlN、AlN+MnS、MnS、Al2O3、AlN+Al2O3,而劣化磁感最明显的夹杂物尺寸区间为100~200nm。 Different size intervals of inclusions in cold rolled non-oriented silicon steel 50SW1300 were counted by scanning electron microscope(SEM),field emission scanning electron microscope(FESEM)and energy disperse spectroscopy(EDS).With principal component regression method:standardization for experimental data,principal component analysis,regression analysis,transform standardized variables into original variables,determination of significant factor,effects of the total number of inclusions and the... 
2014-10-28 147 5.8

提出以“云边一体化架构”构建硅钢智慧决策系统,来解决原硅钢制造L1~L5系统架构模式下的数字信息孤岛、业务功能割裂等问题。在此基础上,开发了云边协同的自学习型控制模型及业务决策模型,构建起硅钢“智慧大脑”,形成了以研发、制造、服务等核心业务数字化融合的智能化决策支持新模式,探索出一条钢铁制造业数字化、智能化转型之路。 SIDS(Silicon-steel Intelligent Decision-making System)based on \"cloud-edge integration architecture\" was proposed to solve the problems of data silos and business function fragmentation in the original L1~L5 system architecture.On this basis,the self-learning control model and decision-making model of cloud-edge collaboration were developed,the \"smart brain\" of silicon steel department was constructed,and a new intelligent decision-making support model of digital integration of core businesses s... 
2022-02-28 147 5.8

【作者】 陈迪安; 李春生; ...
2023-05-09 147 5.8

利用加热炉模拟、动态再结晶以及热模拟等试验方法以及扫描电镜、金相显微镜等分析观察手段对无取向硅钢边裂的成因进行了探讨。结果表明,长时间加热使得板坯边部晶粒异常长大,晶界氧化并脱碳,轧制过程中边部温度过低,动态再结晶过程变弱,使得板坯边部延伸性能变差,是导致硅钢边裂的主要原因。建议通过适当降低铸坯加热温度、缩短保温时间、提高终轧温度来改善硅钢边裂缺陷。 The behaviors of high temperature oxidation,dynamic recrystallization,and hot ductility,microstructure evolution were investigated on the non-oriented electrical steel sheets to discuss the formation of edge crack.The key causes of cracking was found to be the coarse as-cast microstructure,grain boundary oxidation and decarburization in reheating furnace,as well as reduced temperature at strip edge region during hot rolling process resulting in reduced hot ductility and lack of enough dynamic re... 
2013-02-28 147 5.8

对硅钢板材分别进行异步和同步轧制,研究了轧制参数包括速比、压下量和道次对板材表面显微组织的演变的作用.结果表明,异步轧制硅钢板材表面形成了晶粒尺寸为10~50 nm,取向接近随机分布的纳米晶,而同步轧制板材的表面只形成了位错胞,证明异步轧制可以诱发表面纳米化.异步轧制板材表面纳米晶的形成过程为:在剪切力的反复作用下,高密度位错形成、滑移、湮灭和重组形成亚微米尺度的亚微晶/位错胞.随着压下量和轧制道次增加,高密度位错重复以上过程使晶粒尺寸减小、取向差增大,最终形成取向接近随机分布的纳米晶组织.大压下量和多道次是异步轧制诱发板材表面纳米化的关键,而速比的增加可以加快纳米化进程. Surface nanocrystallization(SNC) can effectively enhance the surface and global properties of the metallic materials,such as microhardness,intensity,fatigue,wear and corrosion resistances,therefore provides more promising practical industrial applicability.Up to now,several SNC treatment methods were developed based either on the principles of ball impactions or friction sliding,however,difficulty still exists for the surface treatment of large-dimensional samples with high efficiency.Recently,m... 
2014-09-28 146 5.8

阐述了国内外高磁感取向硅钢的生产研究水平与发展趋势,包括通过提高高斯晶粒取向度、细化磁畴、涂覆张力涂层、减薄钢片厚度进一步降低铁损以及低温加热技术和短流程技术新工艺。分析高磁感取向硅钢在我国大型电力变压器上的应用情况,结果表明,发展更薄规格高磁感、低铁损、低磁致伸缩取向硅钢可为大型变压器的安全性、节能性及环保性提供有效保障。 The research progress and development trend of high magnetic induction grain-oriented silicon steel at home and abroad are summarized,including the technology of improving the Goss alignment,refining domain wall,adding stress coating,decreasing thickness of sheet,and the new technique of reducing heating temperature of casting slab and shortening operational.Moreover,the application of high magnetic induction grain-oriented silicon in power transformer is presented.Developing grain-oriented sili... 
2014-11-28 146 5.8

本发明涉及一种取向硅钢连续高温罩式退火炉及其退火工艺,其包括梯度窑炉,所述梯度窑炉包括A1段退火炉、B段退火炉、C段退火炉、D1段退火炉、A2段退火炉和D2段退火炉;所述A1段退火炉、B段退火炉、C段退火炉、D1段退火炉、A2段退火炉和D2段退火炉依次连接;其中,A1段退火炉、B段退火炉、C段退火炉和D1段退火炉炉顶高度不同,A1段退火炉与A2段退火炉炉顶高度相同,D1段退火炉与D2段退火炉炉顶高度相同。上述在炉顶结构上根据生产工艺,采用的梯度分层次布局,使其在炉顶形成障碍,减缓气流的流通速度达到节能的目的,同时对各个工艺段炉窑内温度的均匀性有提升,并且能够提高产品的质量。
2021-06-03 146 6.8

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